Automattic provide a Latex to PNG WordPress plugin : Wp Latex
$latex i\hbar\frac{\partial}{\partial t}\left|\Psi(t)\right>=H\left|\Psi(t)\right>$
Bayes Theorem in Latex
\Pr(A|B)=\frac{\Pr(B|A)\Pr(A)}{\Pr(B|A)\Pr(A)+\Pr(B|\neg A)\Pr(\neg A)}
Jetpack provides WordPress LATEX – I have tried it yet